Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/sound/isa/sscape.c

  1 /*
  2  *   Low-level ALSA driver for the ENSONIQ SoundScape
  3  *   Copyright (c) by Chris Rankin
  4  *
  5  *   This driver was written in part using information obtained from
  6  *   the OSS/Free SoundScape driver, written by Hannu Savolainen.
  7  *
  8  *
  9  *   This program is free software; you can redistribute it and/or modify
 10  *   it under the terms of the GNU General Public License as published by
 11  *   the Free Software Foundation; either version 2 of the License, or
 12  *   (at your option) any later version.
 13  *
 14  *   This program is distributed in the hope that it will be useful,
 15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 17  *   GNU General Public License for more details.
 18  *
 19  *   You should have received a copy of the GNU General Public License
 20  *   along with this program; if not, write to the Free Software
 21  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 22  */
 23 
 24 #include <linux/init.h>
 25 #include <linux/err.h>
 26 #include <linux/isa.h>
 27 #include <linux/delay.h>
 28 #include <linux/firmware.h>
 29 #include <linux/pnp.h>
 30 #include <linux/spinlock.h>
 31 #include <linux/module.h>
 32 #include <asm/dma.h>
 33 #include <sound/core.h>
 34 #include <sound/wss.h>
 35 #include <sound/mpu401.h>
 36 #include <sound/initval.h>
 37 
 38 
 39 MODULE_AUTHOR("Chris Rankin");
 40 MODULE_DESCRIPTION("ENSONIQ SoundScape driver");
 41 MODULE_LICENSE("GPL");
 42 MODULE_FIRMWARE("sndscape.co0");
 43 MODULE_FIRMWARE("sndscape.co1");
 44 MODULE_FIRMWARE("sndscape.co2");
 45 MODULE_FIRMWARE("sndscape.co3");
 46 MODULE_FIRMWARE("sndscape.co4");
 47 MODULE_FIRMWARE("scope.cod");
 48 
 49 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 50 static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 51 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
 52 static long wss_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
 53 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
 54 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
 55 static int dma[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
 56 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
 57 static bool joystick[SNDRV_CARDS];
 58 
 59 module_param_array(index, int, NULL, 0444);
 60 MODULE_PARM_DESC(index, "Index number for SoundScape soundcard");
 61 
 62 module_param_array(id, charp, NULL, 0444);
 63 MODULE_PARM_DESC(id, "Description for SoundScape card");
 64 
 65 module_param_array(port, long, NULL, 0444);
 66 MODULE_PARM_DESC(port, "Port # for SoundScape driver.");
 67 
 68 module_param_array(wss_port, long, NULL, 0444);
 69 MODULE_PARM_DESC(wss_port, "WSS Port # for SoundScape driver.");
 70 
 71 module_param_array(irq, int, NULL, 0444);
 72 MODULE_PARM_DESC(irq, "IRQ # for SoundScape driver.");
 73 
 74 module_param_array(mpu_irq, int, NULL, 0444);
 75 MODULE_PARM_DESC(mpu_irq, "MPU401 IRQ # for SoundScape driver.");
 76 
 77 module_param_array(dma, int, NULL, 0444);
 78 MODULE_PARM_DESC(dma, "DMA # for SoundScape driver.");
 79 
 80 module_param_array(dma2, int, NULL, 0444);
 81 MODULE_PARM_DESC(dma2, "DMA2 # for SoundScape driver.");
 82 
 83 module_param_array(joystick, bool, NULL, 0444);
 84 MODULE_PARM_DESC(joystick, "Enable gameport.");
 85 
 86 #ifdef CONFIG_PNP
 87 static int isa_registered;
 88 static int pnp_registered;
 89 
 90 static struct pnp_card_device_id sscape_pnpids[] = {
 91         { .id = "ENS3081", .devs = { { "ENS0000" } } }, /* Soundscape PnP */
 92         { .id = "ENS4081", .devs = { { "ENS1011" } } }, /* VIVO90 */
 93         { .id = "" }    /* end */
 94 };
 95 
 96 MODULE_DEVICE_TABLE(pnp_card, sscape_pnpids);
 97 #endif
 98 
 99 
100 #define HOST_CTRL_IO(i)  ((i) + 2)
101 #define HOST_DATA_IO(i)  ((i) + 3)
102 #define ODIE_ADDR_IO(i)  ((i) + 4)
103 #define ODIE_DATA_IO(i)  ((i) + 5)
104 #define CODEC_IO(i)      ((i) + 8)
105 
106 #define IC_ODIE  1
107 #define IC_OPUS  2
108 
109 #define RX_READY 0x01
110 #define TX_READY 0x02
111 
112 #define CMD_ACK                 0x80
113 #define CMD_SET_MIDI_VOL        0x84
114 #define CMD_GET_MIDI_VOL        0x85
115 #define CMD_XXX_MIDI_VOL        0x86
116 #define CMD_SET_EXTMIDI         0x8a
117 #define CMD_GET_EXTMIDI         0x8b
118 #define CMD_SET_MT32            0x8c
119 #define CMD_GET_MT32            0x8d
120 
121 enum GA_REG {
122         GA_INTSTAT_REG = 0,
123         GA_INTENA_REG,
124         GA_DMAA_REG,
125         GA_DMAB_REG,
126         GA_INTCFG_REG,
127         GA_DMACFG_REG,
128         GA_CDCFG_REG,
129         GA_SMCFGA_REG,
130         GA_SMCFGB_REG,
131         GA_HMCTL_REG
132 };
133 
134 #define DMA_8BIT  0x80
135 
136 
137 enum card_type {
138         MEDIA_FX,       /* Sequoia S-1000 */
139         SSCAPE,         /* Sequoia S-2000 */
140         SSCAPE_PNP,
141         SSCAPE_VIVO,
142 };
143 
144 struct soundscape {
145         spinlock_t lock;
146         unsigned io_base;
147         int ic_type;
148         enum card_type type;
149         struct resource *io_res;
150         struct resource *wss_res;
151         struct snd_wss *chip;
152 
153         unsigned char midi_vol;
154 };
155 
156 #define INVALID_IRQ  ((unsigned)-1)
157 
158 
159 static inline struct soundscape *get_card_soundscape(struct snd_card *c)
160 {
161         return (struct soundscape *) (c->private_data);
162 }
163 
164 /*
165  * Allocates some kernel memory that we can use for DMA.
166  * I think this means that the memory has to map to
167  * contiguous pages of physical memory.
168  */
169 static struct snd_dma_buffer *get_dmabuf(struct snd_dma_buffer *buf,
170                                          unsigned long size)
171 {
172         if (buf) {
173                 if (snd_dma_alloc_pages_fallback(SNDRV_DMA_TYPE_DEV,
174                                                  snd_dma_isa_data(),
175                                                  size, buf) < 0) {
176                         snd_printk(KERN_ERR "sscape: Failed to allocate "
177                                             "%lu bytes for DMA\n",
178                                             size);
179                         return NULL;
180                 }
181         }
182 
183         return buf;
184 }
185 
186 /*
187  * Release the DMA-able kernel memory ...
188  */
189 static void free_dmabuf(struct snd_dma_buffer *buf)
190 {
191         if (buf && buf->area)
192                 snd_dma_free_pages(buf);
193 }
194 
195 /*
196  * This function writes to the SoundScape's control registers,
197  * but doesn't do any locking. It's up to the caller to do that.
198  * This is why this function is "unsafe" ...
199  */
200 static inline void sscape_write_unsafe(unsigned io_base, enum GA_REG reg,
201                                        unsigned char val)
202 {
203         outb(reg, ODIE_ADDR_IO(io_base));
204         outb(val, ODIE_DATA_IO(io_base));
205 }
206 
207 /*
208  * Write to the SoundScape's control registers, and do the
209  * necessary locking ...
210  */
211 static void sscape_write(struct soundscape *s, enum GA_REG reg,
212                          unsigned char val)
213 {
214         unsigned long flags;
215 
216         spin_lock_irqsave(&s->lock, flags);
217         sscape_write_unsafe(s->io_base, reg, val);
218         spin_unlock_irqrestore(&s->lock, flags);
219 }
220 
221 /*
222  * Read from the SoundScape's control registers, but leave any
223  * locking to the caller. This is why the function is "unsafe" ...
224  */
225 static inline unsigned char sscape_read_unsafe(unsigned io_base,
226                                                enum GA_REG reg)
227 {
228         outb(reg, ODIE_ADDR_IO(io_base));
229         return inb(ODIE_DATA_IO(io_base));
230 }
231 
232 /*
233  * Puts the SoundScape into "host" mode, as compared to "MIDI" mode
234  */
235 static inline void set_host_mode_unsafe(unsigned io_base)
236 {
237         outb(0x0, HOST_CTRL_IO(io_base));
238 }
239 
240 /*
241  * Puts the SoundScape into "MIDI" mode, as compared to "host" mode
242  */
243 static inline void set_midi_mode_unsafe(unsigned io_base)
244 {
245         outb(0x3, HOST_CTRL_IO(io_base));
246 }
247 
248 /*
249  * Read the SoundScape's host-mode control register, but leave
250  * any locking issues to the caller ...
251  */
252 static inline int host_read_unsafe(unsigned io_base)
253 {
254         int data = -1;
255         if ((inb(HOST_CTRL_IO(io_base)) & RX_READY) != 0)
256                 data = inb(HOST_DATA_IO(io_base));
257 
258         return data;
259 }
260 
261 /*
262  * Read the SoundScape's host-mode control register, performing
263  * a limited amount of busy-waiting if the register isn't ready.
264  * Also leaves all locking-issues to the caller ...
265  */
266 static int host_read_ctrl_unsafe(unsigned io_base, unsigned timeout)
267 {
268         int data;
269 
270         while (((data = host_read_unsafe(io_base)) < 0) && (timeout != 0)) {
271                 udelay(100);
272                 --timeout;
273         } /* while */
274 
275         return data;
276 }
277 
278 /*
279  * Write to the SoundScape's host-mode control registers, but
280  * leave any locking issues to the caller ...
281  */
282 static inline int host_write_unsafe(unsigned io_base, unsigned char data)
283 {
284         if ((inb(HOST_CTRL_IO(io_base)) & TX_READY) != 0) {
285                 outb(data, HOST_DATA_IO(io_base));
286                 return 1;
287         }
288 
289         return 0;
290 }
291 
292 /*
293  * Write to the SoundScape's host-mode control registers, performing
294  * a limited amount of busy-waiting if the register isn't ready.
295  * Also leaves all locking-issues to the caller ...
296  */
297 static int host_write_ctrl_unsafe(unsigned io_base, unsigned char data,
298                                   unsigned timeout)
299 {
300         int err;
301 
302         while (!(err = host_write_unsafe(io_base, data)) && (timeout != 0)) {
303                 udelay(100);
304                 --timeout;
305         } /* while */
306 
307         return err;
308 }
309 
310 
311 /*
312  * Check that the MIDI subsystem is operational. If it isn't,
313  * then we will hang the computer if we try to use it ...
314  *
315  * NOTE: This check is based upon observation, not documentation.
316  */
317 static inline int verify_mpu401(const struct snd_mpu401 *mpu)
318 {
319         return ((inb(MPU401C(mpu)) & 0xc0) == 0x80);
320 }
321 
322 /*
323  * This is apparently the standard way to initailise an MPU-401
324  */
325 static inline void initialise_mpu401(const struct snd_mpu401 *mpu)
326 {
327         outb(0, MPU401D(mpu));
328 }
329 
330 /*
331  * Tell the SoundScape to activate the AD1845 chip (I think).
332  * The AD1845 detection fails if we *don't* do this, so I
333  * think that this is a good idea ...
334  */
335 static void activate_ad1845_unsafe(unsigned io_base)
336 {
337         unsigned char val = sscape_read_unsafe(io_base, GA_HMCTL_REG);
338         sscape_write_unsafe(io_base, GA_HMCTL_REG, (val & 0xcf) | 0x10);
339         sscape_write_unsafe(io_base, GA_CDCFG_REG, 0x80);
340 }
341 
342 /*
343  * Do the necessary ALSA-level cleanup to deallocate our driver ...
344  */
345 static void soundscape_free(struct snd_card *c)
346 {
347         struct soundscape *sscape = get_card_soundscape(c);
348         release_and_free_resource(sscape->io_res);
349         release_and_free_resource(sscape->wss_res);
350         free_dma(sscape->chip->dma1);
351 }
352 
353 /*
354  * Tell the SoundScape to begin a DMA tranfer using the given channel.
355  * All locking issues are left to the caller.
356  */
357 static void sscape_start_dma_unsafe(unsigned io_base, enum GA_REG reg)
358 {
359         sscape_write_unsafe(io_base, reg,
360                             sscape_read_unsafe(io_base, reg) | 0x01);
361         sscape_write_unsafe(io_base, reg,
362                             sscape_read_unsafe(io_base, reg) & 0xfe);
363 }
364 
365 /*
366  * Wait for a DMA transfer to complete. This is a "limited busy-wait",
367  * and all locking issues are left to the caller.
368  */
369 static int sscape_wait_dma_unsafe(unsigned io_base, enum GA_REG reg,
370                                   unsigned timeout)
371 {
372         while (!(sscape_read_unsafe(io_base, reg) & 0x01) && (timeout != 0)) {
373                 udelay(100);
374                 --timeout;
375         } /* while */
376 
377         return sscape_read_unsafe(io_base, reg) & 0x01;
378 }
379 
380 /*
381  * Wait for the On-Board Processor to return its start-up
382  * acknowledgement sequence. This wait is too long for
383  * us to perform "busy-waiting", and so we must sleep.
384  * This in turn means that we must not be holding any
385  * spinlocks when we call this function.
386  */
387 static int obp_startup_ack(struct soundscape *s, unsigned timeout)
388 {
389         unsigned long end_time = jiffies + msecs_to_jiffies(timeout);
390 
391         do {
392                 unsigned long flags;
393                 int x;
394 
395                 spin_lock_irqsave(&s->lock, flags);
396                 x = host_read_unsafe(s->io_base);
397                 spin_unlock_irqrestore(&s->lock, flags);
398                 if (x == 0xfe || x == 0xff)
399                         return 1;
400 
401                 msleep(10);
402         } while (time_before(jiffies, end_time));
403 
404         return 0;
405 }
406 
407 /*
408  * Wait for the host to return its start-up acknowledgement
409  * sequence. This wait is too long for us to perform
410  * "busy-waiting", and so we must sleep. This in turn means
411  * that we must not be holding any spinlocks when we call
412  * this function.
413  */
414 static int host_startup_ack(struct soundscape *s, unsigned timeout)
415 {
416         unsigned long end_time = jiffies + msecs_to_jiffies(timeout);
417 
418         do {
419                 unsigned long flags;
420                 int x;
421 
422                 spin_lock_irqsave(&s->lock, flags);
423                 x = host_read_unsafe(s->io_base);
424                 spin_unlock_irqrestore(&s->lock, flags);
425                 if (x == 0xfe)
426                         return 1;
427 
428                 msleep(10);
429         } while (time_before(jiffies, end_time));
430 
431         return 0;
432 }
433 
434 /*
435  * Upload a byte-stream into the SoundScape using DMA channel A.
436  */
437 static int upload_dma_data(struct soundscape *s, const unsigned char *data,
438                            size_t size)
439 {
440         unsigned long flags;
441         struct snd_dma_buffer dma;
442         int ret;
443         unsigned char val;
444 
445         if (!get_dmabuf(&dma, PAGE_ALIGN(32 * 1024)))
446                 return -ENOMEM;
447 
448         spin_lock_irqsave(&s->lock, flags);
449 
450         /*
451          * Reset the board ...
452          */
453         val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
454         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val & 0x3f);
455 
456         /*
457          * Enable the DMA channels and configure them ...
458          */
459         val = (s->chip->dma1 << 4) | DMA_8BIT;
460         sscape_write_unsafe(s->io_base, GA_DMAA_REG, val);
461         sscape_write_unsafe(s->io_base, GA_DMAB_REG, 0x20);
462 
463         /*
464          * Take the board out of reset ...
465          */
466         val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
467         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x80);
468 
469         /*
470          * Upload the firmware to the SoundScape
471          * board through the DMA channel ...
472          */
473         while (size != 0) {
474                 unsigned long len;
475 
476                 len = min(size, dma.bytes);
477                 memcpy(dma.area, data, len);
478                 data += len;
479                 size -= len;
480 
481                 snd_dma_program(s->chip->dma1, dma.addr, len, DMA_MODE_WRITE);
482                 sscape_start_dma_unsafe(s->io_base, GA_DMAA_REG);
483                 if (!sscape_wait_dma_unsafe(s->io_base, GA_DMAA_REG, 5000)) {
484                         /*
485                          * Don't forget to release this spinlock we're holding
486                          */
487                         spin_unlock_irqrestore(&s->lock, flags);
488 
489                         snd_printk(KERN_ERR
490                                         "sscape: DMA upload has timed out\n");
491                         ret = -EAGAIN;
492                         goto _release_dma;
493                 }
494         } /* while */
495 
496         set_host_mode_unsafe(s->io_base);
497         outb(0x0, s->io_base);
498 
499         /*
500          * Boot the board ... (I think)
501          */
502         val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
503         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x40);
504         spin_unlock_irqrestore(&s->lock, flags);
505 
506         /*
507          * If all has gone well, then the board should acknowledge
508          * the new upload and tell us that it has rebooted OK. We
509          * give it 5 seconds (max) ...
510          */
511         ret = 0;
512         if (!obp_startup_ack(s, 5000)) {
513                 snd_printk(KERN_ERR "sscape: No response "
514                                     "from on-board processor after upload\n");
515                 ret = -EAGAIN;
516         } else if (!host_startup_ack(s, 5000)) {
517                 snd_printk(KERN_ERR
518                                 "sscape: SoundScape failed to initialise\n");
519                 ret = -EAGAIN;
520         }
521 
522 _release_dma:
523         /*
524          * NOTE!!! We are NOT holding any spinlocks at this point !!!
525          */
526         sscape_write(s, GA_DMAA_REG, (s->ic_type == IC_OPUS ? 0x40 : 0x70));
527         free_dmabuf(&dma);
528 
529         return ret;
530 }
531 
532 /*
533  * Upload the bootblock(?) into the SoundScape. The only
534  * purpose of this block of code seems to be to tell
535  * us which version of the microcode we should be using.
536  */
537 static int sscape_upload_bootblock(struct snd_card *card)
538 {
539         struct soundscape *sscape = get_card_soundscape(card);
540         unsigned long flags;
541         const struct firmware *init_fw = NULL;
542         int data = 0;
543         int ret;
544 
545         ret = request_firmware(&init_fw, "scope.cod", card->dev);
546         if (ret < 0) {
547                 snd_printk(KERN_ERR "sscape: Error loading scope.cod");
548                 return ret;
549         }
550         ret = upload_dma_data(sscape, init_fw->data, init_fw->size);
551 
552         release_firmware(init_fw);
553 
554         spin_lock_irqsave(&sscape->lock, flags);
555         if (ret == 0)
556                 data = host_read_ctrl_unsafe(sscape->io_base, 100);
557 
558         if (data & 0x10)
559                 sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2f);
560 
561         spin_unlock_irqrestore(&sscape->lock, flags);
562 
563         data &= 0xf;
564         if (ret == 0 && data > 7) {
565                 snd_printk(KERN_ERR
566                                 "sscape: timeout reading firmware version\n");
567                 ret = -EAGAIN;
568         }
569 
570         return (ret == 0) ? data : ret;
571 }
572 
573 /*
574  * Upload the microcode into the SoundScape.
575  */
576 static int sscape_upload_microcode(struct snd_card *card, int version)
577 {
578         struct soundscape *sscape = get_card_soundscape(card);
579         const struct firmware *init_fw = NULL;
580         char name[14];
581         int err;
582 
583         snprintf(name, sizeof(name), "sndscape.co%d", version);
584 
585         err = request_firmware(&init_fw, name, card->dev);
586         if (err < 0) {
587                 snd_printk(KERN_ERR "sscape: Error loading sndscape.co%d",
588                                 version);
589                 return err;
590         }
591         err = upload_dma_data(sscape, init_fw->data, init_fw->size);
592         if (err == 0)
593                 snd_printk(KERN_INFO "sscape: MIDI firmware loaded %d KBs\n",
594                                 init_fw->size >> 10);
595 
596         release_firmware(init_fw);
597 
598         return err;
599 }
600 
601 /*
602  * Mixer control for the SoundScape's MIDI device.
603  */
604 static int sscape_midi_info(struct snd_kcontrol *ctl,
605                             struct snd_ctl_elem_info *uinfo)
606 {
607         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
608         uinfo->count = 1;
609         uinfo->value.integer.min = 0;
610         uinfo->value.integer.max = 127;
611         return 0;
612 }
613 
614 static int sscape_midi_get(struct snd_kcontrol *kctl,
615                            struct snd_ctl_elem_value *uctl)
616 {
617         struct snd_wss *chip = snd_kcontrol_chip(kctl);
618         struct snd_card *card = chip->card;
619         register struct soundscape *s = get_card_soundscape(card);
620         unsigned long flags;
621 
622         spin_lock_irqsave(&s->lock, flags);
623         uctl->value.integer.value[0] = s->midi_vol;
624         spin_unlock_irqrestore(&s->lock, flags);
625         return 0;
626 }
627 
628 static int sscape_midi_put(struct snd_kcontrol *kctl,
629                            struct snd_ctl_elem_value *uctl)
630 {
631         struct snd_wss *chip = snd_kcontrol_chip(kctl);
632         struct snd_card *card = chip->card;
633         struct soundscape *s = get_card_soundscape(card);
634         unsigned long flags;
635         int change;
636         unsigned char new_val;
637 
638         spin_lock_irqsave(&s->lock, flags);
639 
640         new_val = uctl->value.integer.value[0] & 127;
641         /*
642          * We need to put the board into HOST mode before we
643          * can send any volume-changing HOST commands ...
644          */
645         set_host_mode_unsafe(s->io_base);
646 
647         /*
648          * To successfully change the MIDI volume setting, you seem to
649          * have to write a volume command, write the new volume value,
650          * and then perform another volume-related command. Perhaps the
651          * first command is an "open" and the second command is a "close"?
652          */
653         if (s->midi_vol == new_val) {
654                 change = 0;
655                 goto __skip_change;
656         }
657         change = host_write_ctrl_unsafe(s->io_base, CMD_SET_MIDI_VOL, 100)
658                  && host_write_ctrl_unsafe(s->io_base, new_val, 100)
659                  && host_write_ctrl_unsafe(s->io_base, CMD_XXX_MIDI_VOL, 100)
660                  && host_write_ctrl_unsafe(s->io_base, new_val, 100);
661         s->midi_vol = new_val;
662 __skip_change:
663 
664         /*
665          * Take the board out of HOST mode and back into MIDI mode ...
666          */
667         set_midi_mode_unsafe(s->io_base);
668 
669         spin_unlock_irqrestore(&s->lock, flags);
670         return change;
671 }
672 
673 static struct snd_kcontrol_new midi_mixer_ctl = {
674         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
675         .name = "MIDI",
676         .info = sscape_midi_info,
677         .get = sscape_midi_get,
678         .put = sscape_midi_put
679 };
680 
681 /*
682  * The SoundScape can use two IRQs from a possible set of four.
683  * These IRQs are encoded as bit patterns so that they can be
684  * written to the control registers.
685  */
686 static unsigned get_irq_config(int sscape_type, int irq)
687 {
688         static const int valid_irq[] = { 9, 5, 7, 10 };
689         static const int old_irq[] = { 9, 7, 5, 15 };
690         unsigned cfg;
691 
692         if (sscape_type == MEDIA_FX) {
693                 for (cfg = 0; cfg < ARRAY_SIZE(old_irq); ++cfg)
694                         if (irq == old_irq[cfg])
695                                 return cfg;
696         } else {
697                 for (cfg = 0; cfg < ARRAY_SIZE(valid_irq); ++cfg)
698                         if (irq == valid_irq[cfg])
699                                 return cfg;
700         }
701 
702         return INVALID_IRQ;
703 }
704 
705 /*
706  * Perform certain arcane port-checks to see whether there
707  * is a SoundScape board lurking behind the given ports.
708  */
709 static int detect_sscape(struct soundscape *s, long wss_io)
710 {
711         unsigned long flags;
712         unsigned d;
713         int retval = 0;
714 
715         spin_lock_irqsave(&s->lock, flags);
716 
717         /*
718          * The following code is lifted from the original OSS driver,
719          * and as I don't have a datasheet I cannot really comment
720          * on what it is doing...
721          */
722         if ((inb(HOST_CTRL_IO(s->io_base)) & 0x78) != 0)
723                 goto _done;
724 
725         d = inb(ODIE_ADDR_IO(s->io_base)) & 0xf0;
726         if ((d & 0x80) != 0)
727                 goto _done;
728 
729         if (d == 0)
730                 s->ic_type = IC_ODIE;
731         else if ((d & 0x60) != 0)
732                 s->ic_type = IC_OPUS;
733         else
734                 goto _done;
735 
736         outb(0xfa, ODIE_ADDR_IO(s->io_base));
737         if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0a)
738                 goto _done;
739 
740         outb(0xfe, ODIE_ADDR_IO(s->io_base));
741         if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0e)
742                 goto _done;
743 
744         outb(0xfe, ODIE_ADDR_IO(s->io_base));
745         d = inb(ODIE_DATA_IO(s->io_base));
746         if (s->type != SSCAPE_VIVO && (d & 0x9f) != 0x0e)
747                 goto _done;
748 
749         if (s->ic_type == IC_OPUS)
750                 activate_ad1845_unsafe(s->io_base);
751 
752         if (s->type == SSCAPE_VIVO)
753                 wss_io += 4;
754 
755         d  = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
756         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0);
757 
758         /* wait for WSS codec */
759         for (d = 0; d < 500; d++) {
760                 if ((inb(wss_io) & 0x80) == 0)
761                         break;
762                 spin_unlock_irqrestore(&s->lock, flags);
763                 msleep(1);
764                 spin_lock_irqsave(&s->lock, flags);
765         }
766 
767         if ((inb(wss_io) & 0x80) != 0)
768                 goto _done;
769 
770         if (inb(wss_io + 2) == 0xff)
771                 goto _done;
772 
773         d  = sscape_read_unsafe(s->io_base, GA_HMCTL_REG) & 0x3f;
774         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d);
775 
776         if ((inb(wss_io) & 0x80) != 0)
777                 s->type = MEDIA_FX;
778 
779         d = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
780         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0);
781         /* wait for WSS codec */
782         for (d = 0; d < 500; d++) {
783                 if ((inb(wss_io) & 0x80) == 0)
784                         break;
785                 spin_unlock_irqrestore(&s->lock, flags);
786                 msleep(1);
787                 spin_lock_irqsave(&s->lock, flags);
788         }
789 
790         /*
791          * SoundScape successfully detected!
792          */
793         retval = 1;
794 
795 _done:
796         spin_unlock_irqrestore(&s->lock, flags);
797         return retval;
798 }
799 
800 /*
801  * ALSA callback function, called when attempting to open the MIDI device.
802  * Check that the MIDI firmware has been loaded, because we don't want
803  * to crash the machine. Also check that someone isn't using the hardware
804  * IOCTL device.
805  */
806 static int mpu401_open(struct snd_mpu401 *mpu)
807 {
808         if (!verify_mpu401(mpu)) {
809                 snd_printk(KERN_ERR "sscape: MIDI disabled, "
810                                     "please load firmware\n");
811                 return -ENODEV;
812         }
813 
814         return 0;
815 }
816 
817 /*
818  * Initialse an MPU-401 subdevice for MIDI support on the SoundScape.
819  */
820 static int create_mpu401(struct snd_card *card, int devnum,
821                          unsigned long port, int irq)
822 {
823         struct soundscape *sscape = get_card_soundscape(card);
824         struct snd_rawmidi *rawmidi;
825         int err;
826 
827         err = snd_mpu401_uart_new(card, devnum, MPU401_HW_MPU401, port,
828                                   MPU401_INFO_INTEGRATED, irq, &rawmidi);
829         if (err == 0) {
830                 struct snd_mpu401 *mpu = rawmidi->private_data;
831                 mpu->open_input = mpu401_open;
832                 mpu->open_output = mpu401_open;
833                 mpu->private_data = sscape;
834 
835                 initialise_mpu401(mpu);
836         }
837 
838         return err;
839 }
840 
841 
842 /*
843  * Create an AD1845 PCM subdevice on the SoundScape. The AD1845
844  * is very much like a CS4231, with a few extra bits. We will
845  * try to support at least some of the extra bits by overriding
846  * some of the CS4231 callback.
847  */
848 static int create_ad1845(struct snd_card *card, unsigned port,
849                          int irq, int dma1, int dma2)
850 {
851         register struct soundscape *sscape = get_card_soundscape(card);
852         struct snd_wss *chip;
853         int err;
854         int codec_type = WSS_HW_DETECT;
855 
856         switch (sscape->type) {
857         case MEDIA_FX:
858         case SSCAPE:
859                 /*
860                  * There are some freak examples of early Soundscape cards
861                  * with CS4231 instead of AD1848/CS4248. Unfortunately, the
862                  * CS4231 works only in CS4248 compatibility mode on
863                  * these cards so force it.
864                  */
865                 if (sscape->ic_type != IC_OPUS)
866                         codec_type = WSS_HW_AD1848;
867                 break;
868 
869         case SSCAPE_VIVO:
870                 port += 4;
871                 break;
872         default:
873                 break;
874         }
875 
876         err = snd_wss_create(card, port, -1, irq, dma1, dma2,
877                              codec_type, WSS_HWSHARE_DMA1, &chip);
878         if (!err) {
879                 unsigned long flags;
880                 struct snd_pcm *pcm;
881 
882                 if (sscape->type != SSCAPE_VIVO) {
883                         /*
884                          * The input clock frequency on the SoundScape must
885                          * be 14.31818 MHz, because we must set this register
886                          * to get the playback to sound correct ...
887                          */
888                         snd_wss_mce_up(chip);
889                         spin_lock_irqsave(&chip->reg_lock, flags);
890                         snd_wss_out(chip, AD1845_CLOCK, 0x20);
891                         spin_unlock_irqrestore(&chip->reg_lock, flags);
892                         snd_wss_mce_down(chip);
893 
894                 }
895 
896                 err = snd_wss_pcm(chip, 0, &pcm);
897                 if (err < 0) {
898                         snd_printk(KERN_ERR "sscape: No PCM device "
899                                             "for AD1845 chip\n");
900                         goto _error;
901                 }
902 
903                 err = snd_wss_mixer(chip);
904                 if (err < 0) {
905                         snd_printk(KERN_ERR "sscape: No mixer device "
906                                             "for AD1845 chip\n");
907                         goto _error;
908                 }
909                 if (chip->hardware != WSS_HW_AD1848) {
910                         err = snd_wss_timer(chip, 0, NULL);
911                         if (err < 0) {
912                                 snd_printk(KERN_ERR "sscape: No timer device "
913                                                     "for AD1845 chip\n");
914                                 goto _error;
915                         }
916                 }
917 
918                 if (sscape->type != SSCAPE_VIVO) {
919                         err = snd_ctl_add(card,
920                                           snd_ctl_new1(&midi_mixer_ctl, chip));
921                         if (err < 0) {
922                                 snd_printk(KERN_ERR "sscape: Could not create "
923                                                     "MIDI mixer control\n");
924                                 goto _error;
925                         }
926                 }
927 
928                 sscape->chip = chip;
929         }
930 
931 _error:
932         return err;
933 }
934 
935 
936 /*
937  * Create an ALSA soundcard entry for the SoundScape, using
938  * the given list of port, IRQ and DMA resources.
939  */
940 static int create_sscape(int dev, struct snd_card *card)
941 {
942         struct soundscape *sscape = get_card_soundscape(card);
943         unsigned dma_cfg;
944         unsigned irq_cfg;
945         unsigned mpu_irq_cfg;
946         struct resource *io_res;
947         struct resource *wss_res;
948         unsigned long flags;
949         int err;
950         int val;
951         const char *name;
952 
953         /*
954          * Grab IO ports that we will need to probe so that we
955          * can detect and control this hardware ...
956          */
957         io_res = request_region(port[dev], 8, "SoundScape");
958         if (!io_res) {
959                 snd_printk(KERN_ERR
960                            "sscape: can't grab port 0x%lx\n", port[dev]);
961                 return -EBUSY;
962         }
963         wss_res = NULL;
964         if (sscape->type == SSCAPE_VIVO) {
965                 wss_res = request_region(wss_port[dev], 4, "SoundScape");
966                 if (!wss_res) {
967                         snd_printk(KERN_ERR "sscape: can't grab port 0x%lx\n",
968                                             wss_port[dev]);
969                         err = -EBUSY;
970                         goto _release_region;
971                 }
972         }
973 
974         /*
975          * Grab one DMA channel ...
976          */
977         err = request_dma(dma[dev], "SoundScape");
978         if (err < 0) {
979                 snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]);
980                 goto _release_region;
981         }
982 
983         spin_lock_init(&sscape->lock);
984         sscape->io_res = io_res;
985         sscape->wss_res = wss_res;
986         sscape->io_base = port[dev];
987 
988         if (!detect_sscape(sscape, wss_port[dev])) {
989                 printk(KERN_ERR "sscape: hardware not detected at 0x%x\n",
990                         sscape->io_base);
991                 err = -ENODEV;
992                 goto _release_dma;
993         }
994 
995         switch (sscape->type) {
996         case MEDIA_FX:
997                 name = "MediaFX/SoundFX";
998                 break;
999         case SSCAPE:
1000                 name = "Soundscape";
1001                 break;
1002         case SSCAPE_PNP:
1003                 name = "Soundscape PnP";
1004                 break;
1005         case SSCAPE_VIVO:
1006                 name = "Soundscape VIVO";
1007                 break;
1008         default:
1009                 name = "unknown Soundscape";
1010                 break;
1011         }
1012 
1013         printk(KERN_INFO "sscape: %s card detected at 0x%x, using IRQ %d, DMA %d\n",
1014                          name, sscape->io_base, irq[dev], dma[dev]);
1015 
1016         /*
1017          * Check that the user didn't pass us garbage data ...
1018          */
1019         irq_cfg = get_irq_config(sscape->type, irq[dev]);
1020         if (irq_cfg == INVALID_IRQ) {
1021                 snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]);
1022                 err = -ENXIO;
1023                 goto _release_dma;
1024         }
1025 
1026         mpu_irq_cfg = get_irq_config(sscape->type, mpu_irq[dev]);
1027         if (mpu_irq_cfg == INVALID_IRQ) {
1028                 snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]);
1029                 err = -ENXIO;
1030                 goto _release_dma;
1031         }
1032 
1033         /*
1034          * Tell the on-board devices where their resources are (I think -
1035          * I can't be sure without a datasheet ... So many magic values!)
1036          */
1037         spin_lock_irqsave(&sscape->lock, flags);
1038 
1039         sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2e);
1040         sscape_write_unsafe(sscape->io_base, GA_SMCFGB_REG, 0x00);
1041 
1042         /*
1043          * Enable and configure the DMA channels ...
1044          */
1045         sscape_write_unsafe(sscape->io_base, GA_DMACFG_REG, 0x50);
1046         dma_cfg = (sscape->ic_type == IC_OPUS ? 0x40 : 0x70);
1047         sscape_write_unsafe(sscape->io_base, GA_DMAA_REG, dma_cfg);
1048         sscape_write_unsafe(sscape->io_base, GA_DMAB_REG, 0x20);
1049 
1050         mpu_irq_cfg |= mpu_irq_cfg << 2;
1051         val = sscape_read_unsafe(sscape->io_base, GA_HMCTL_REG) & 0xF7;
1052         if (joystick[dev])
1053                 val |= 8;
1054         sscape_write_unsafe(sscape->io_base, GA_HMCTL_REG, val | 0x10);
1055         sscape_write_unsafe(sscape->io_base, GA_INTCFG_REG, 0xf0 | mpu_irq_cfg);
1056         sscape_write_unsafe(sscape->io_base,
1057                             GA_CDCFG_REG, 0x09 | DMA_8BIT
1058                             | (dma[dev] << 4) | (irq_cfg << 1));
1059         /*
1060          * Enable the master IRQ ...
1061          */
1062         sscape_write_unsafe(sscape->io_base, GA_INTENA_REG, 0x80);
1063 
1064         spin_unlock_irqrestore(&sscape->lock, flags);
1065 
1066         /*
1067          * We have now enabled the codec chip, and so we should
1068          * detect the AD1845 device ...
1069          */
1070         err = create_ad1845(card, wss_port[dev], irq[dev],
1071                             dma[dev], dma2[dev]);
1072         if (err < 0) {
1073                 snd_printk(KERN_ERR
1074                                 "sscape: No AD1845 device at 0x%lx, IRQ %d\n",
1075                                 wss_port[dev], irq[dev]);
1076                 goto _release_dma;
1077         }
1078         strcpy(card->driver, "SoundScape");
1079         strcpy(card->shortname, name);
1080         snprintf(card->longname, sizeof(card->longname),
1081                  "%s at 0x%lx, IRQ %d, DMA1 %d, DMA2 %d\n",
1082                  name, sscape->chip->port, sscape->chip->irq,
1083                  sscape->chip->dma1, sscape->chip->dma2);
1084 
1085 #define MIDI_DEVNUM  0
1086         if (sscape->type != SSCAPE_VIVO) {
1087                 err = sscape_upload_bootblock(card);
1088                 if (err >= 0)
1089                         err = sscape_upload_microcode(card, err);
1090 
1091                 if (err == 0) {
1092                         err = create_mpu401(card, MIDI_DEVNUM, port[dev],
1093                                             mpu_irq[dev]);
1094                         if (err < 0) {
1095                                 snd_printk(KERN_ERR "sscape: Failed to create "
1096                                                 "MPU-401 device at 0x%lx\n",
1097                                                 port[dev]);
1098                                 goto _release_dma;
1099                         }
1100 
1101                         /*
1102                          * Initialize mixer
1103                          */
1104                         spin_lock_irqsave(&sscape->lock, flags);
1105                         sscape->midi_vol = 0;
1106                         host_write_ctrl_unsafe(sscape->io_base,
1107                                                 CMD_SET_MIDI_VOL, 100);
1108                         host_write_ctrl_unsafe(sscape->io_base,
1109                                                 sscape->midi_vol, 100);
1110                         host_write_ctrl_unsafe(sscape->io_base,
1111                                                 CMD_XXX_MIDI_VOL, 100);
1112                         host_write_ctrl_unsafe(sscape->io_base,
1113                                                 sscape->midi_vol, 100);
1114                         host_write_ctrl_unsafe(sscape->io_base,
1115                                                 CMD_SET_EXTMIDI, 100);
1116                         host_write_ctrl_unsafe(sscape->io_base,
1117                                                 0, 100);
1118                         host_write_ctrl_unsafe(sscape->io_base, CMD_ACK, 100);
1119 
1120                         set_midi_mode_unsafe(sscape->io_base);
1121                         spin_unlock_irqrestore(&sscape->lock, flags);
1122                 }
1123         }
1124 
1125         /*
1126          * Now that we have successfully created this sound card,
1127          * it is safe to store the pointer.
1128          * NOTE: we only register the sound card's "destructor"
1129          *       function now that our "constructor" has completed.
1130          */
1131         card->private_free = soundscape_free;
1132 
1133         return 0;
1134 
1135 _release_dma:
1136         free_dma(dma[dev]);
1137 
1138 _release_region:
1139         release_and_free_resource(wss_res);
1140         release_and_free_resource(io_res);
1141 
1142         return err;
1143 }
1144 
1145 
1146 static int snd_sscape_match(struct device *pdev, unsigned int i)
1147 {
1148         /*
1149          * Make sure we were given ALL of the other parameters.
1150          */
1151         if (port[i] == SNDRV_AUTO_PORT)
1152                 return 0;
1153 
1154         if (irq[i] == SNDRV_AUTO_IRQ ||
1155             mpu_irq[i] == SNDRV_AUTO_IRQ ||
1156             dma[i] == SNDRV_AUTO_DMA) {
1157                 printk(KERN_INFO
1158                        "sscape: insufficient parameters, "
1159                        "need IO, IRQ, MPU-IRQ and DMA\n");
1160                 return 0;
1161         }
1162 
1163         return 1;
1164 }
1165 
1166 static int snd_sscape_probe(struct device *pdev, unsigned int dev)
1167 {
1168         struct snd_card *card;
1169         struct soundscape *sscape;
1170         int ret;
1171 
1172         ret = snd_card_new(pdev, index[dev], id[dev], THIS_MODULE,
1173                            sizeof(struct soundscape), &card);
1174         if (ret < 0)
1175                 return ret;
1176 
1177         sscape = get_card_soundscape(card);
1178         sscape->type = SSCAPE;
1179 
1180         dma[dev] &= 0x03;
1181 
1182         ret = create_sscape(dev, card);
1183         if (ret < 0)
1184                 goto _release_card;
1185 
1186         ret = snd_card_register(card);
1187         if (ret < 0) {
1188                 snd_printk(KERN_ERR "sscape: Failed to register sound card\n");
1189                 goto _release_card;
1190         }
1191         dev_set_drvdata(pdev, card);
1192         return 0;
1193 
1194 _release_card:
1195         snd_card_free(card);
1196         return ret;
1197 }
1198 
1199 static int snd_sscape_remove(struct device *devptr, unsigned int dev)
1200 {
1201         snd_card_free(dev_get_drvdata(devptr));
1202         return 0;
1203 }
1204 
1205 #define DEV_NAME "sscape"
1206 
1207 static struct isa_driver snd_sscape_driver = {
1208         .match          = snd_sscape_match,
1209         .probe          = snd_sscape_probe,
1210         .remove         = snd_sscape_remove,
1211         /* FIXME: suspend/resume */
1212         .driver         = {
1213                 .name   = DEV_NAME
1214         },
1215 };
1216 
1217 #ifdef CONFIG_PNP
1218 static inline int get_next_autoindex(int i)
1219 {
1220         while (i < SNDRV_CARDS && port[i] != SNDRV_AUTO_PORT)
1221                 ++i;
1222         return i;
1223 }
1224 
1225 
1226 static int sscape_pnp_detect(struct pnp_card_link *pcard,
1227                              const struct pnp_card_device_id *pid)
1228 {
1229         static int idx = 0;
1230         struct pnp_dev *dev;
1231         struct snd_card *card;
1232         struct soundscape *sscape;
1233         int ret;
1234 
1235         /*
1236          * Allow this function to fail *quietly* if all the ISA PnP
1237          * devices were configured using module parameters instead.
1238          */
1239         idx = get_next_autoindex(idx);
1240         if (idx >= SNDRV_CARDS)
1241                 return -ENOSPC;
1242 
1243         /*
1244          * Check that we still have room for another sound card ...
1245          */
1246         dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL);
1247         if (!dev)
1248                 return -ENODEV;
1249 
1250         if (!pnp_is_active(dev)) {
1251                 if (pnp_activate_dev(dev) < 0) {
1252                         snd_printk(KERN_INFO "sscape: device is inactive\n");
1253                         return -EBUSY;
1254                 }
1255         }
1256 
1257         /*
1258          * Create a new ALSA sound card entry, in anticipation
1259          * of detecting our hardware ...
1260          */
1261         ret = snd_card_new(&pcard->card->dev,
1262                            index[idx], id[idx], THIS_MODULE,
1263                            sizeof(struct soundscape), &card);
1264         if (ret < 0)
1265                 return ret;
1266 
1267         sscape = get_card_soundscape(card);
1268 
1269         /*
1270          * Identify card model ...
1271          */
1272         if (!strncmp("ENS4081", pid->id, 7))
1273                 sscape->type = SSCAPE_VIVO;
1274         else
1275                 sscape->type = SSCAPE_PNP;
1276 
1277         /*
1278          * Read the correct parameters off the ISA PnP bus ...
1279          */
1280         port[idx] = pnp_port_start(dev, 0);
1281         irq[idx] = pnp_irq(dev, 0);
1282         mpu_irq[idx] = pnp_irq(dev, 1);
1283         dma[idx] = pnp_dma(dev, 0) & 0x03;
1284         if (sscape->type == SSCAPE_PNP) {
1285                 dma2[idx] = dma[idx];
1286                 wss_port[idx] = CODEC_IO(port[idx]);
1287         } else {
1288                 wss_port[idx] = pnp_port_start(dev, 1);
1289                 dma2[idx] = pnp_dma(dev, 1);
1290         }
1291 
1292         ret = create_sscape(idx, card);
1293         if (ret < 0)
1294                 goto _release_card;
1295 
1296         ret = snd_card_register(card);
1297         if (ret < 0) {
1298                 snd_printk(KERN_ERR "sscape: Failed to register sound card\n");
1299                 goto _release_card;
1300         }
1301 
1302         pnp_set_card_drvdata(pcard, card);
1303         ++idx;
1304         return 0;
1305 
1306 _release_card:
1307         snd_card_free(card);
1308         return ret;
1309 }
1310 
1311 static void sscape_pnp_remove(struct pnp_card_link *pcard)
1312 {
1313         snd_card_free(pnp_get_card_drvdata(pcard));
1314         pnp_set_card_drvdata(pcard, NULL);
1315 }
1316 
1317 static struct pnp_card_driver sscape_pnpc_driver = {
1318         .flags = PNP_DRIVER_RES_DO_NOT_CHANGE,
1319         .name = "sscape",
1320         .id_table = sscape_pnpids,
1321         .probe = sscape_pnp_detect,
1322         .remove = sscape_pnp_remove,
1323 };
1324 
1325 #endif /* CONFIG_PNP */
1326 
1327 static int __init sscape_init(void)
1328 {
1329         int err;
1330 
1331         err = isa_register_driver(&snd_sscape_driver, SNDRV_CARDS);
1332 #ifdef CONFIG_PNP
1333         if (!err)
1334                 isa_registered = 1;
1335 
1336         err = pnp_register_card_driver(&sscape_pnpc_driver);
1337         if (!err)
1338                 pnp_registered = 1;
1339 
1340         if (isa_registered)
1341                 err = 0;
1342 #endif
1343         return err;
1344 }
1345 
1346 static void __exit sscape_exit(void)
1347 {
1348 #ifdef CONFIG_PNP
1349         if (pnp_registered)
1350                 pnp_unregister_card_driver(&sscape_pnpc_driver);
1351         if (isa_registered)
1352 #endif
1353                 isa_unregister_driver(&snd_sscape_driver);
1354 }
1355 
1356 module_init(sscape_init);
1357 module_exit(sscape_exit);
1358 

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